Melt margarine with olive oil in a large skillet. Remove half and reserve. Add the onions and mushrooms to the skillet and simmer until liquid from mushrooms has evaporated, about 20 minutes. Remove from heat and stir in lemon juice, nutmeg, salt, pepper and sour cream. Mix well.
Preheat oven to 350 degrees. Brush a thin layer of the reserved margarine-olive oil mixture along the bottom of a 9 x 13-inch pan. Add two sheets of phyllo and brush again. Add 2 more sheets and repeat. Spread mushroom mixture across phyllo. Top with two more sheets, brush with margarine, two more and brush again. Sprinkle with sesame seeds if desired. Bake until top is golden brown, 30 to 45 minutes. (Can also be made like a jelly roll – after 4 sheets of phyllo, spread half the mushroom mixture along the outer edge and roll up. Repeat with the remaining dough and mushrooms)

CELEBRATE is here and selling fast. It’s gorgeous, it’s packed with over 200 sensational, original recipes, and magnificent photos by award-winning photographers. Watch your emails for a few sneak peak recipes and lots of special appearance dates all over the country. PLUS, the proceeds benefit Emunah’s Children’s homes in Israel, so your purchase is also charity and kindness. It’s the perfect treat for yourself or special gift.See what they are saying about CELEBRATE in the Press here. CELEBRATE is available at local stores, Emunah.org and Amazon.com